Zeus-2D Simulations of Laser-Driven Radiative Shock Experiments |
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Authors: | D R Leibrandt R P Drake J M Stone |
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Institution: | (1) Department of Atmospheric, Oceanic, and Space Sciences, University of Michigan, USA;(2) Department of Astrophysical Sciences, Princeton University, USA |
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Abstract: | A series of experiments is underway using the Omega laser to examine radiative shocks of astrophysical relevance. In these
experiments, the laser accelerates a thin layer of low-Z material, which drives a strong shock into xenon gas. One-dimensional numerical simulations using the HYADES radiation hydrodynamics
code predict that radiation cooling will cause the shocked xenon to collapse spatially, producing a thin layer of high density
(i.e., a collapsed shock). Preliminary experimental results show a less opaque layer of shocked xenon than would be expected
assuming that all the xenon accumulates in the layer and that the X-ray source is a pure Kα source. However, neither of these
assumptions is strictly correct. Here we explore whether radial mass and/or energy transport may be significant to the dynamics
of the system. We report the results of two-dimensional numerical simulations using the ZEUS-2D astrophysical fluid dynamics
code. Particular attention is given to the simulation method. |
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Keywords: | radiation hydrodynamics methods: numerical |
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